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Date: Wed, 9 Jun 2010 21:54:04 -0600
From: "Yang, Bo" <Bo.Yang@....com>
To: "Yang, Bo" <Bo.Yang@....com>,
"'James.Bottomley@...senPartnership.com'"
<James.Bottomley@...senPartnership.com>,
"'James.Bottomley@...e.de'" <James.Bottomley@...e.de>
CC: "'linux-scsi@...r.kernel.org'" <linux-scsi@...r.kernel.org>,
"'akpm@...l.org'" <akpm@...l.org>,
"'linux-kernel@...r.kernel.org'" <linux-kernel@...r.kernel.org>
Subject: [PATCH 5/12] scsi: megaraid_sas - Online Controller Reset (OCR):
Add and initialize the OCR relaed variable
To support online controller reset, driver need to define some instance based variable and initialize them.
Signed-off-by Bo Yang<bo.yang@....com>
---
drivers/scsi/megaraid/megaraid_sas.c | 80 ++++++++++++++++++++++++++---------
drivers/scsi/megaraid/megaraid_sas.h | 13 ++++-
2 files changed, 70 insertions(+), 23 deletions(-)
diff -rupN old/drivers/scsi/megaraid/megaraid_sas.c new/drivers/scsi/megaraid/megaraid_sas.c
--- old/drivers/scsi/megaraid/megaraid_sas.c 2010-06-08 15:39:25.000000000 -0400
+++ new/drivers/scsi/megaraid/megaraid_sas.c 2010-06-08 16:07:25.000000000 -0400
@@ -1856,7 +1856,8 @@ megasas_service_aen(struct megasas_insta
instance->aen_cmd = NULL;
megasas_return_cmd(instance, cmd);
- if (instance->unload == 0) {
+ if ((instance->unload == 0) &&
+ ((instance->issuepend_done == 1))) {
struct megasas_aen_event *ev;
ev = kzalloc(sizeof(*ev), GFP_ATOMIC);
if (!ev) {
@@ -1951,6 +1952,9 @@ megasas_complete_cmd(struct megasas_inst
struct megasas_header *hdr = &cmd->frame->hdr;
unsigned long flags;
+ /* flag for the retry reset */
+ cmd->retry_for_fw_reset = 0;
+
if (cmd->scmd)
cmd->scmd->SCp.ptr = NULL;
@@ -2076,27 +2080,29 @@ megasas_complete_cmd(struct megasas_inst
* @alt_status: Alternate status to be returned to
* SCSI mid-layer instead of the status
* returned by the FW
+ * Note: this must be called with hba lock held
*/
static int
-megasas_deplete_reply_queue(struct megasas_instance *instance, u8 alt_status)
+megasas_deplete_reply_queue(struct megasas_instance *instance,
+ u8 alt_status)
{
- /*
- * Check if it is our interrupt
- * Clear the interrupt
- */
- if(instance->instancet->clear_intr(instance->reg_set))
+ u32 mfiStatus;
+ u32 fw_state;
+
+ if ((mfiStatus = instance->instancet->check_reset(instance,
+ instance->reg_set)) == 1) {
+ return IRQ_HANDLED;
+ }
+
+ if ((mfiStatus = instance->instancet->clear_intr(
+ instance->reg_set)
+ ) == 0) {
return IRQ_NONE;
+ }
- if (instance->hw_crit_error)
- goto out_done;
- /*
- * Schedule the tasklet for cmd completion
- */
tasklet_schedule(&instance->isr_tasklet);
-out_done:
return IRQ_HANDLED;
}
-
/**
* megasas_isr - isr entry point
*/
@@ -2260,7 +2266,7 @@ megasas_transition_to_ready(struct megas
"in %d secs\n", fw_state, max_wait);
return -ENODEV;
}
- };
+ }
printk(KERN_INFO "megasas: FW now in Ready state\n");
return 0;
@@ -2342,6 +2348,7 @@ static int megasas_create_frame_pool(str
*/
sgl_sz = sge_sz * instance->max_num_sge;
frame_count = (sgl_sz + MEGAMFI_FRAME_SIZE - 1) / MEGAMFI_FRAME_SIZE;
+ frame_count = 15;
/*
* We need one extra frame for the MFI command
@@ -2489,6 +2496,7 @@ static int megasas_alloc_cmds(struct meg
cmd = instance->cmd_list[i];
memset(cmd, 0, sizeof(struct megasas_cmd));
cmd->index = i;
+ cmd->scmd = NULL;
cmd->instance = instance;
list_add_tail(&cmd->list, &instance->cmd_pool);
@@ -2656,7 +2664,7 @@ megasas_get_ld_list(struct megasas_insta
/* the following function will get the instance PD LIST */
- if ((ret == 0) && (ci->ldCount < MAX_LOGICAL_DRIVES)) {
+ if ((ret == 0) && (ci->ldCount <= MAX_LOGICAL_DRIVES)) {
memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS);
for (ld_index = 0; ld_index < ci->ldCount; ld_index++) {
@@ -2970,6 +2978,21 @@ static int megasas_init_mfi(struct megas
if (megasas_issue_init_mfi(instance))
goto fail_fw_init;
+ instance->fw_support_ieee = 0;
+ instance->fw_support_ieee =
+ (instance->instancet->read_fw_status_reg(reg_set) &
+ 0x04000000);
+
+ printk(KERN_NOTICE "megasas_init_mfi: fw_support_ieee=%d",
+ instance->fw_support_ieee);
+
+ if (instance->fw_support_ieee)
+ instance->flag_ieee = 1;
+
+ /** for passthrough
+ * the following function will get the PD LIST.
+ */
+
memset(instance->pd_list, 0 ,
(MEGASAS_MAX_PD * sizeof(struct megasas_pd_list)));
megasas_get_pd_list(instance);
@@ -2996,6 +3019,8 @@ static int megasas_init_mfi(struct megas
max_sectors_2 = ctrl_info->max_request_size;
tmp_sectors = min_t(u32, max_sectors_1 , max_sectors_2);
+ instance->disableOnlineCtrlReset =
+ ctrl_info->properties.OnOffProperties.disableOnlineCtrlReset;
}
instance->max_sectors_per_req = instance->max_num_sge *
@@ -3217,6 +3242,7 @@ megasas_register_aen(struct megasas_inst
dcmd->flags = MFI_FRAME_DIR_READ;
dcmd->timeout = 0;
dcmd->pad_0 = 0;
+ instance->last_seq_num = seq_num;
dcmd->data_xfer_len = sizeof(struct megasas_evt_detail);
dcmd->opcode = MR_DCMD_CTRL_EVENT_WAIT;
dcmd->mbox.w[0] = seq_num;
@@ -3385,6 +3411,7 @@ megasas_probe_one(struct pci_dev *pdev,
instance = (struct megasas_instance *)host->hostdata;
memset(instance, 0, sizeof(*instance));
+ atomic_set( &instance->fw_reset_no_pci_access, 0 );
instance->producer = pci_alloc_consistent(pdev, sizeof(u32),
&instance->producer_h);
@@ -3402,6 +3429,9 @@ megasas_probe_one(struct pci_dev *pdev,
megasas_poll_wait_aen = 0;
instance->flag_ieee = 0;
instance->ev = NULL;
+ instance->issuepend_done = 1;
+ instance->adprecovery = MEGASAS_HBA_OPERATIONAL;
+ megasas_poll_wait_aen = 0;
instance->evt_detail = pci_alloc_consistent(pdev,
sizeof(struct
@@ -3451,6 +3481,9 @@ megasas_probe_one(struct pci_dev *pdev,
instance->flag = 0;
instance->unload = 1;
instance->last_time = 0;
+ instance->disableOnlineCtrlReset = 1;
+
+ INIT_WORK(&instance->work_init, process_fw_state_change_wq);
/*
* Initialize MFI Firmware
@@ -3542,6 +3575,9 @@ static void megasas_flush_cache(struct m
struct megasas_cmd *cmd;
struct megasas_dcmd_frame *dcmd;
+ if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR)
+ return;
+
cmd = megasas_get_cmd(instance);
if (!cmd)
@@ -3579,6 +3615,9 @@ static void megasas_shutdown_controller(
struct megasas_cmd *cmd;
struct megasas_dcmd_frame *dcmd;
+ if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR)
+ return;
+
cmd = megasas_get_cmd(instance);
if (!cmd)
@@ -4086,8 +4125,8 @@ static int megasas_mgmt_ioctl_fw(struct
goto out_kfree_ioc;
}
- if (instance->hw_crit_error == 1) {
- printk(KERN_DEBUG "Controller in Crit ERROR\n");
+ if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) {
+ printk(KERN_ERR "Controller in crit error\n");
error = -ENODEV;
goto out_kfree_ioc;
}
@@ -4104,6 +4143,7 @@ static int megasas_mgmt_ioctl_fw(struct
error = -ERESTARTSYS;
goto out_kfree_ioc;
}
+
error = megasas_mgmt_fw_ioctl(instance, user_ioc, ioc);
up(&instance->ioctl_sem);
@@ -4132,8 +4172,8 @@ static int megasas_mgmt_ioctl_aen(struct
if (!instance)
return -ENODEV;
- if (instance->hw_crit_error == 1) {
- error = -ENODEV;
+ if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) {
+ return -ENODEV;
}
if (instance->unload == 1) {
diff -rupN old/drivers/scsi/megaraid/megaraid_sas.h new/drivers/scsi/megaraid/megaraid_sas.h
--- old/drivers/scsi/megaraid/megaraid_sas.h 2010-06-08 15:39:25.000000000 -0400
+++ new/drivers/scsi/megaraid/megaraid_sas.h 2010-06-08 15:59:09.000000000 -0400
@@ -60,6 +60,7 @@
#define MFI_STATE_READY 0xB0000000
#define MFI_STATE_OPERATIONAL 0xC0000000
#define MFI_STATE_FAULT 0xF0000000
+#define MFI_RESET_REQUIRED 0x00000001
#define MEGAMFI_FRAME_SIZE 64
@@ -409,7 +410,6 @@ struct megasas_ctrl_prop {
u8 restore_hotspare_on_insertion;
u8 expose_encl_devices;
u8 reserved[38];
-
} __packed;
/*
@@ -1265,19 +1265,24 @@ struct megasas_instance {
struct pci_dev *pdev;
u32 unique_id;
+ u32 fw_support_ieee;
atomic_t fw_outstanding;
- u32 hw_crit_error;
+ atomic_t fw_reset_no_pci_access;
struct megasas_instance_template *instancet;
struct tasklet_struct isr_tasklet;
+ struct work_struct work_init;
u8 flag;
u8 unload;
u8 flag_ieee;
u8 issuepend_done;
+ u8 disableOnlineCtrlReset;
u8 adprecovery;
unsigned long last_time;
+ u32 mfiStatus;
+ u32 last_seq_num;
struct timer_list io_completion_timer;
struct list_head internal_reset_pending_q;
@@ -1325,7 +1330,9 @@ struct megasas_cmd {
u32 index;
u8 sync_cmd;
u8 cmd_status;
- u16 abort_aen;
+ u8 abort_aen;
+ u8 retry_for_fw_reset;
+
struct list_head list;
struct scsi_cmnd *scmd;
--
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